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the set in the crawl space is to sharp, will choke air, u can get away with 1.5 to 1 but rule of thumb 2 to 1 or better. example if your setting 12" up in your crawl space the length of piece should b minimum 24" long. P.S. u do neat work

the set in the crawl space is to sharp, will choke air, u can get away with 1.5 to 1 but rule of thumb 2 to 1 or better. example if your setting 12" up in your crawl space the length of piece should b minimum 24" long. P.S. u do neat work

you want to try and keep a ratio of 4:1 optimal, 3:1 is good, 2:1 is but, sometimes you have to do what you have to do with the space your working with. Seems there is never enough space, but in a perfect world.....